Organic-Inorganic Hybrids for Lighting

Vania Teixeira Freitas, Rate Amorim S. Ferreira, and Luis D. Carlos 

The Sol-Gel Handbook Synthesis, Characterization, and Applications, First Edition. 

SSL performance is characterized by the luminous efficacy (ifehnW ) that accoimts for the ratio between the luminous flux (Im) and the electric power (W), offering the following advantages, compared with conventional light somces [9,10]  

In the absence of an integrating sphere, radiometric/photometric quantities, such as radiance/luminance (i), are also used to quantify the performance of SSL devices. Radiance (W m sr ) measures the quantity of radiation that passes through or is emitted from a surface and fells within a given solid angle in a specified direction. When radiance is weighted by the sensitivity of human eyes, luminance values (hn m sr ) are reported. The main parameters that are used to characterize the quality of a light source are the following  

WLED one is based on data from Narukawa et al. [IS] and CREE catalog [17].The WOLED curve is built based on data from Chang and Lu [14] and NEC Lighting cataiog [18] and the WPLED one is based on data from Reineke et al. [1], Wu et al. [19], Tang et al. [20], and Li et al. [21]. 

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